A regional energy supply system for peak shaving of renewable energy generation

Abstract

This utility model discloses a regional energy supply system for peak shaving of renewable energy power generation, belonging to the field of energy technology. It includes an energy supply system configured as a multi-heat source heat pump unit, which is connected to a load system, a supplementary energy system, and an energy exchange system. The multi-heat source heat pump unit includes a condenser, a water tank, a compressor, and a heat pump controller. The refrigerant inlet of the condenser is connected to the water tank and the load system, and the refrigerant outlet of the condenser is connected to the compressor, the load system, and the water tank. This utility model efficiently integrates multiple renewable energy sources, achieving stable and flexible energy supply, promoting peak shaving and absorption of renewable energy, reducing power curtailment, and demonstrating good economic and environmental benefits.

Description

Technical Field

[0001] This utility model relates to the field of energy technology, and in particular to a regional energy supply system for peak shaving of renewable energy power generation. Background Technology

[0002] Against the backdrop of global energy transition, renewable energy sources such as solar and wind power are increasingly accounting for a larger share of the energy supply system due to their clean and sustainable advantages. The booming development of renewable energy power generation methods, such as wind and solar power, has become an important way to alleviate the energy crisis and environmental pollution. However, renewable energy power generation is characterized by intermittency and volatility. For example, wind power is affected by wind speed variations, and solar power is constrained by factors such as day and night and weather. This leads to unstable power output, posing a significant challenge to grid peak shaving. How to effectively utilize renewable energy power generation and achieve stable grid peak shaving has become an urgent technical problem to be solved.

[0003] District energy systems, as important facilities that centrally provide energy (such as heating and cooling) to users within a certain area, play a crucial role in comprehensive energy utilization. Traditional district energy systems often underutilize renewable energy sources and lack effective peak-shaving mechanisms during the energy supply process. When renewable energy generation is excessive, it is difficult to store and rationally distribute the surplus energy; conversely, when renewable energy generation is insufficient, it is unable to replenish energy in a timely manner to meet load demands, resulting in low energy efficiency and an inability to effectively adapt to the characteristics of renewable energy generation.

[0004] To address these issues, while existing technologies offer some improvements to district energy systems, most suffer from drawbacks such as low energy conversion efficiency and unsatisfactory peak-shaving performance. For example, some systems fail to fully integrate various renewable energy sources and energy storage devices, hindering efficient energy complementarity and flexible allocation; others have shortcomings in load management and energy exchange, making it difficult to adjust energy supply strategies in real time according to actual needs.

[0005] Therefore, there is an urgent need to design a regional energy supply system that can be well adapted to renewable energy power generation and has efficient peak-shaving capabilities, so as to improve the utilization efficiency of renewable energy and ensure the stability and reliability of regional energy supply. Utility Model Content

[0006] The purpose of this invention is to provide a regional energy supply system for peak shaving of renewable energy power generation, in order to solve the problems in the background art.

[0007] To achieve the above objectives, this utility model provides a regional energy supply system for peak shaving of renewable energy power generation, including an energy supply system configured as a multi-heat source heat pump unit. The multi-heat source heat pump unit is connected to a load system, a supplementary energy system, and an energy exchange system, respectively. The multi-heat source heat pump unit includes a condenser, a water tank, a compressor, and a heat pump controller. The refrigerant inlet of the condenser is connected to the water tank and the load system, respectively, and the refrigerant outlet of the condenser is connected to the compressor, the load system, and the water tank, respectively.

[0008] Preferably, the load system includes a heat exchanger, a temperature sensor, a household load, and a centralized load. The heat exchanger is internally provided with a first heat exchange coil and a second heat exchange coil. The two ends of the first heat exchange coil are respectively connected to the refrigerant inlet and the refrigerant outlet of the condenser, and the two ends of the second heat exchange coil are respectively connected to the heat exchange inlet and the heat exchange outlet of the heat exchanger.

[0009] Household loads and centralized loads are connected to the heat exchange outlet and heat exchange inlet of the heat exchanger, respectively.

[0010] Preferably, the heat exchange inlet of the condenser is connected to the outlet of the energy replenishment system and the energy exchange system via a first circulation pump set. The energy exchange system includes a soil energy storage component installed underground and a water source energy storage component installed on the ground and underground.

[0011] Preferably, the heat exchange outlet of the condenser is connected to the water inlet of the energy replenishment system and the energy exchange system.

[0012] Preferably, the refrigerant inlet of the condenser is connected to the outlet of the first heat exchange coil via a first electric three-way valve, an expansion valve is provided between the heat exchanger and the first electric three-way valve, the refrigerant inlet of the condenser is connected to the heat exchange outlet of the water storage tank via a third passage of the first electric three-way valve, and a temperature sensor is provided between the first electric three-way valve and the heat exchange outlet of the water storage tank.

[0013] Preferably, the refrigerant outlet of the condenser is connected to the compressor, heat exchanger, and water storage tank respectively via a four-way reversing valve. The middle copper pipe end of the four-way reversing valve is connected to the inlet of the compressor, the main pipe inlet end of the four-way reversing valve is connected to the outlet of the compressor, the single-pass copper pipe end of the four-way reversing valve is connected to the refrigerant inlet of the heat exchanger, and a second electric three-way valve is provided between the heat exchanger and the single-pass copper pipe end of the four-way reversing valve. The third passage of the second electric three-way valve is connected to the heat exchange inlet of the water storage tank.

[0014] Preferably, the water storage tank is provided with a third heat exchange coil inside, and the two ends of the third heat exchange coil are respectively connected to the heat exchange outlet and heat exchange inlet of the water storage tank; the water storage tank is provided with a liquid inlet, a liquid outlet and a liquid replenishment port.

[0015] Preferably, the inlet of the water storage tank is connected to the outlet of the second heat exchange coil, the outlet of the water storage tank is connected to the inlet of the second heat exchange coil, and the replenishment port of the water storage tank is connected to an external water source through a shut-off valve.

[0016] Preferably, the inlet pipe of the energy replenishment system is connected to the outlet pipe of the energy exchange system. The energy replenishment system includes a solar collector and a heat pump unit. A third circulation pump unit is installed on the inlet pipes of the solar collector and the heat pump unit.

[0017] Preferably, the energy supply system, the load system, the energy replenishment system, and the energy exchange system are all connected to the wind power generation system.

[0018] Therefore, the regional energy supply system for peak shaving of renewable energy power generation using the above-described structure of this utility model has the following beneficial effects:

[0019] (1) This utility model, by setting up a multi-heat-source heat pump unit, which includes components such as a condenser, a water tank, a compressor, and a heat pump controller, can integrate multiple heat sources and convert renewable energy power generation into heat or cold energy stored in the water tank and energy exchange system, thereby achieving efficient utilization of multiple energy sources and effectively solving the problem of intermittent renewable energy power generation. The condenser is connected to the load system, the supplementary energy system, and the energy exchange system, and can flexibly adjust the energy input and output according to different energy supply conditions and load demands, thereby improving the comprehensive utilization efficiency of energy.

[0020] (2) The heat exchanger in the load system is equipped with a first heat exchange coil and a second heat exchange coil, which can realize efficient heat exchange between the refrigerant and the load-side medium, meeting the different needs of household loads and centralized loads. The temperature sensor can monitor the temperature in real time, providing a basis for the precise control of the system and ensuring the stability and comfort of the power supply.

[0021] (3) The energy exchange system can make full use of the energy storage characteristics of soil, surface and groundwater sources to achieve seasonal energy storage and regulation, and further enhance the system's peak-shaving capacity. The supplementary energy system, by combining with solar collectors, heat pump units, etc., can effectively utilize renewable energy sources such as solar energy and reduce dependence on traditional energy sources.

[0022] (4) Through the reasonable connection and control of components such as the circulating pump set, electric three-way valve, and four-way reversing valve, the various components in this system realize the flexible circulation and distribution of refrigerant, enabling the system to operate efficiently under different working conditions. At the same time, the water storage tank can store excess energy, which can be released simultaneously with the multi-heat source heat pump unit to supply energy when energy supply is needed, thus playing a role in stabilizing the operation of the system.

[0023] (5) The power supply system, load system, supplementary power system and energy exchange system are all connected to the wind power generation system, realizing the coordinated use of multiple renewable energy sources, promoting the peak shaving and consumption of renewable energy, reducing the phenomenon of power curtailment, and having good economic and environmental benefits.

[0024] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the power supply system according to an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the heat exchanger according to an embodiment of the present utility model;

[0028] Figure 4 This is a schematic diagram showing the connection between the energy supply system and the heat exchanger in an embodiment of this utility model;

[0029] Figure label:

[0030] 1. Wind and solar power generation system; 11. Wind power; 12. Photovoltaic power; 13. Photovoltaic combiner box; 14. Wind-solar hybrid dual MPPT controller; 15. Energy storage container; 16. Energy storage converter; 17. Integrated control cabinet; 18. Heat pump controller; 19. Heat pump controller terminal panel;

[0031] 2. Energy supply system; 21. Condenser; 22. Water storage tank; 23. Compressor; 24. First circulation pump unit; 25. First electric three-way valve; 26. Expansion valve; 27. Four-way reversing valve; 28. Second electric three-way valve; 29. ​​Third heat exchange coil; 210. Second circulation pump; 211. Multi-heat source heat pump unit;

[0032] 3. Energy replenishment system; 31. Solar collector; 32. Heat pump unit; 33. Third circulation pump unit;

[0033] 4. Energy exchange system; 41. Soil energy storage component; 42. Water source energy storage component;

[0034] 5. Load system; 51. Heat exchanger; 52. Temperature sensor; 53. Household load; 54. Centralized load; 55. First heat exchange coil; 56. Second heat exchange coil. Detailed Implementation

[0035] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0036] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] Example

[0038] like Figures 1-4 As shown, this utility model provides a regional energy supply system 2 for peak shaving of renewable energy power generation, including an energy supply system 2. The energy supply system 2 is configured as a multi-heat source heat pump unit 211, which is connected to a load system 5, a supplementary energy system 3, and an energy exchange system 4 respectively. During the energy supply season, the energy supply system 2 supplies a large amount of low-grade energy to the load system 5, and the load system 5 then converts the low-grade energy into high-grade energy to supply energy to users. It can also extract energy from the energy exchange system 4 and supply it to the load system 5, which then upgrades it to high-grade energy. At the same time, the recycled waste heat and waste cold energy are stored in the deep soil layer for off-season energy supply, thereby reducing the operating costs incurred when obtaining energy and saving energy supply costs when the load system 5 supplies high-quality energy.

[0039] The multi-source heat pump unit 211 includes a condenser 21, a water tank 22, a compressor 23, and a heat pump controller 18. A protective shell is installed on the outermost side of the multi-source heat pump unit 211, with the components housed inside. An insulation layer is installed between the water tank 22 and the compressor 23 and condenser 21, and a partition is installed between the water tank 22 and the protective shell. The condenser 21 uses existing conventional equipment; the refrigerant inlet of the condenser 21 is connected to the water tank 22 and the load system 5, respectively, and the refrigerant outlet of the condenser 21 is connected to the compressor 23, the load system 5, and the water tank 22, respectively.

[0040] The load system 5 includes a heat exchanger 51, a temperature sensor 52, a residential load 53, and a centralized load 54. The heat exchanger 51 consists of an inner cylinder and an outer shell, with an insulation layer between them. Inside the inner cylinder of the heat exchanger 51, there is a first heat exchange coil 55 and a second heat exchange coil 56. The two ends of the first heat exchange coil 55 are connected to the refrigerant inlet and outlet of the condenser 21, respectively. The two ends of the second heat exchange coil 56 are connected to the heat exchange inlet and outlet of the heat exchanger 51, respectively. The residential load 53 and the centralized load 54 are connected to the heat exchange outlet and inlet of the heat exchanger 51, respectively, to supply heat. In this embodiment, two sets of condensers 21, a water tank 22, a compressor 23, and a heat exchanger 51 are used to connect to the residential load 53 and the centralized load 54, respectively, and they are temporarily combined with other systems. See the specific structure below. Figure 1 The heat exchanger 51 achieves efficient heat exchange of refrigerant through a dual-coil structure, providing heat for household loads 53 (such as home heating) and centralized loads 54 (such as district heating).

[0041] The heat exchange outlet of condenser 21 is connected to the inlet of energy replenishment system 3 and energy exchange system 4 via a ground source heat pump. The refrigerant inlet of condenser 21 is connected to the outlet of first heat exchange coil 55 via first electric three-way valve 25. An expansion valve 26 is installed between first heat exchange coil 55 and first electric three-way valve 25. The refrigerant inlet of condenser 21 is connected to the heat exchange outlet of water storage tank 22 via a pipeline through the third passage of first electric three-way valve 25. A temperature sensor is installed between first electric three-way valve 25 and heat exchange outlet of water storage tank 22.

[0042] The refrigerant outlet of condenser 21 is connected to compressor 23, heat exchanger 51 and water storage tank 22 respectively through four-way reversing valve 27. The refrigerant circulation path is controlled by four-way reversing valve 27 to realize the system switching between "energy supply mode" (supplying heat to the load) and "energy storage mode" (storing heat to water storage tank 22). The refrigerant outlet of condenser 21 is connected to the single-pass copper pipe end of four-way reversing valve 27 when it is not energized. The middle copper pipe end is connected to the inlet of compressor 23 through a pipeline. Compressor 23 has two interfaces. The outlet is connected to the main pipe inlet end of four-way reversing valve 27. When compressor 23 does work, it delivers refrigerant to the single-pass copper pipe end of four-way reversing valve 27 when four-way reversing valve 27 is energized.

[0043] When the four-way reversing valve 27 is energized, the single-pass copper pipe end is connected to the refrigerant inlet of the heat exchanger 51. A second electric three-way valve 28 is provided between the single-pass copper pipe end of the four-way reversing valve 27 and the connection end of the heat exchanger 51. The third passage of the second electric three-way valve 28 is connected to the heat exchange inlet of the water storage tank 22 through a pipeline.

[0044] The water storage tank 22 has an inner cylinder, and the outer side of the inner cylinder is equipped with a heat insulation layer. The inner cylinder of the water storage tank 22 is equipped with a third heat exchange coil 29 and is filled with water. The two ends of the third heat exchange coil 29 are connected to the heat exchange outlet and heat exchange inlet of the water storage tank 22, respectively. The water storage tank 22 is equipped with a liquid inlet, a liquid outlet and a liquid replenishment port. The liquid inlet, liquid outlet and liquid replenishment port are exposed through the partition. The bottom of the multi-heat source heat pump unit 211 is equipped with cabinet doors on the sides of the liquid inlet, liquid outlet and liquid replenishment port to facilitate maintenance of various interfaces and circulation pumps and other accessories. The inlet of the water storage tank 22 is connected to the outlet of the second heat exchange coil 56 through a pipeline, and the outlet of the water storage tank 22 is connected to the inlet of the second heat exchange coil 56 through a pipeline. A second circulation pump 210 is installed between the outlet of the water storage tank 22 and the heat exchange inlet of the heat exchanger 51. The second circulation pump 210 is installed in the internal space of the bottom cabinet door of the multi-heat source heat pump unit 211. The replenishment port of the water storage tank 22 is connected to the external water source through a shut-off valve.

[0045] When the coil (pilot valve) on the four-way reversing valve 27 is not energized, it is a heating system; when the coil (pilot valve) on the four-way reversing valve 27 is energized, it is a cooling system. When the multi-source heat pump unit 211 provides cooling or heating, the heat pump controller 18 starts the second circulation pump 210, and the heat exchange outlet and inlet of the condenser 21, and the liquid inlet and outlet of the water storage tank 22 simultaneously provide heat to the heat exchanger 51. When the household load 53 and the centralized load 54 have no energy demand, the heat pump controller 18 opens the first electric three-way valve 25 and the second electric three-way valve 28 to connect the heat exchange outlet, heat exchange inlet, and third heat exchange coil 29 of the water storage tank 22, storing energy in the water storage tank 22. When the temperature sensor 52 shows that the return water temperature has reached the set value, the first electric three-way valve 25 and the second electric three-way valve 28 are closed, and the power supply to the compressor 23 is stopped.

[0046] The heat exchange inlet of condenser 21 is connected sequentially to the outlet of energy replenishment system 3 and energy exchange system 4 via a ground source heat pump, a first circulation pump group 24, and a first standby circulation pump. Energy exchange system 4 includes a soil energy storage component 41 installed underground and water source energy storage components 42 installed both above and below ground. It utilizes the thermal capacity characteristics of soil and water sources to achieve seasonal heat storage (e.g., heat storage in summer and release in winter), balancing the intermittency of renewable energy sources (such as solar and wind power) and providing a stable basic heat source. For example, soil, groundwater, surface water, low-temperature geothermal water, tailwater, and artificial reservoirs or tanks can all serve as heat sources for winter and summer energy supply. This system uses clean energy to connect with wind and solar power, utilizing green electricity resources to create a "zero-carbon" energy supply system. Simultaneously, an off-season energy replenishment system 3 is added to balance the energy replenishment issues of energy exchange system 4 during off-seasons.

[0047] The inlet pipe of the energy replenishment system 3 is connected to the outlet pipe of the energy exchange system 4. The energy replenishment system 3 includes two types of energy replenishment equipment: a solar collector 31 and a heat pump unit 32. The solar collector 31 and the heat pump unit 32 are also conventional equipment in the field, and the connection is also conventional in the field. They can be used as auxiliary heat sources to supplement the lack of natural energy storage such as soil and water sources, and enhance the diversity of energy input of the system. The inlet pipes of the two types of energy replenishment equipment are connected to the outlet pipes of the energy exchange system 4, and the outlet pipes of the two types of energy replenishment equipment are connected to the return water end of the energy exchange system 4. A third circulation pump group 33 is set between the inlet pipe of the energy replenishment system 3 (i.e., the inlet pipes of the solar collector 31 and the heat pump unit 32) and the outlet pipe of the energy exchange system 4. The third circulation pump group 33 includes a third circulation pump and a third standby circulation pump, and check valves are set at the inlet and outlet.

[0048] The outlet and return water pipes of the aforementioned energy exchange system 4 are in the same direction as the energy supply system 2 when it is supplying energy.

[0049] Energy supply system 2, load system 5, supplementary energy system 3, and energy exchange system 4 are all connected to wind power generation system 1. Wind and solar power generation system 1 consists of two parts: wind power 11 and photovoltaic power 12. Photovoltaic power 12 is connected to wind-solar hybrid dual MPPT controller 14 through photovoltaic combiner box 13. Wind power 11 is directly connected to wind-solar hybrid dual MPPT controller 14. Wind-solar hybrid dual MPPT controller 14 is connected in sequence to energy storage container 15 and energy storage converter 16. Energy storage converter 16 controls the relevant components in energy supply system 2, load system 5, supplementary energy system 3, and energy exchange system 4 through integrated control cabinet 17 and heat pump controller 18, respectively. In this setup, wind power 11 converts the kinetic energy of wind into electrical energy and transmits it to the wind-solar hybrid dual MPPT controller 14. Solar power 12 converts solar energy into electrical energy through multiple photovoltaic modules and transmits it to the wind-solar hybrid dual MPPT controller 14 via a photovoltaic combiner box 13. The wind-solar hybrid dual MPPT controller 14 regulates and controls the electrical energy generated by wind power 11 and solar power 12, charging the battery pack according to the energy demand of the municipal power grid and the characteristic curve of the batteries inside the energy storage container 15. When the generated power cannot meet the load demand, the wind-solar hybrid dual MPPT controller 14 can extract electrical energy from the energy storage container 15 and send it to the load. When the batteries in the energy storage container 15 are fully charged, the wind-solar hybrid dual MPPT controller 14 prevents the batteries in the energy storage container 15 from being overcharged. When the stored electrical energy in the batteries in the energy storage container 15 is depleted, the wind-solar hybrid dual MPPT controller 14 protects the batteries in the energy storage container 15 from being over-discharged.

[0050] The coil (pilot valve) on the four-way reversing valve 27, compressor 23, first electric three-way valve 25, second electric three-way valve 28, third circulating pump, and expansion valve 26 in the multi-source heat pump unit 211 are all electrically connected to the heat pump controller 18. The heat pump controller 18 is connected to the integrated control cabinet 17 via the heat pump controller terminal panel 19. The temperature sensor 52 is connected to the heat pump controller 18 via signal. The controller in the wind and solar power generation system 1 sends signals to the heat pump controller 18 based on the temperature settings of the household load 53 and centralized load 54. The heat pump controller 18 powers on each electrically connected device according to the control logic and controls the start / stop and energy supply conversion of each electrically connected device by powering off the device via the built-in temperature sensor. The integrated control cabinet 17 provides power to the first circulating pump group and controls the start / stop of each electrically connected circulating pump by powering it on and off.

[0051] This device distributes power through a wind-solar hybrid dual MPPT controller 14. The energy storage container 15 supplies power to the energy supply system 2 via the energy storage converter 16. When the power supply from wind power 11, photovoltaic power 12, and energy storage container 15 is insufficient, the energy storage converter 16 directly uses municipal grid power. By setting up the wind-solar power generation system 11 to provide power support for the entire system, the contradiction between peak-shaving power supply and demand is resolved. After solving the power required for energy supply, it can also store energy and generate peak-shaving power for grid connection.

[0052] When the system is running, the wind power generation system 1 provides electricity to all components. During the energy harvesting phase, the soil and groundwater in the energy exchange system 4 transfer energy to the heat exchange inlet of the condenser 21 through heat exchange. After heat exchange in the condenser 21, the heat is transferred to the refrigerant. In addition, solar energy can be collected by the solar collector 31 of the supplementary energy system 3, and the heat can be transferred to the condenser 21 through the third circulation pump group 33 to achieve off-season energy supplementation.

[0053] In this embodiment, all the above-mentioned components and devices can be conventional devices in the art, and their connection methods and performance parameters can also be conventional. For example, the rated power of compressor 23 is 15kW, and the suction pressure range is 0.3-0.8MPa; the measurement accuracy of temperature sensor 52 is ±0.5℃, and the response time is ≤5s; the flow rate of the first circulation pump group 24 can be selected according to the heat exchange requirements of condenser 21. When the system is designed to supply 100kW of heat, the pump group flow rate can be selected as 10m³ / h. 3 / h. Specific limitations are selected based on the actual application.

[0054] During the energy supply phase, the refrigerant is heated and pressurized by the compressor 23, and enters the condenser 21 or the water storage tank 22 through the four-way reversing valve 27. When the load system 5 requires heat, the refrigerant enters the first heat exchange coil 55 of the heat exchanger 51 through the first electric three-way valve 25, and exchanges heat with the medium in the second heat exchange coil 56 to provide heat for the residential load 53 and the centralized load 54. The temperature sensor 52 monitors the temperature in real time, and adjusts the refrigerant flow into the heat exchanger 51 and the water storage tank 22 by controlling the opening of the first electric three-way valve 25 and the second electric three-way valve 28, thereby achieving precise energy supply.

[0055] When there is an energy surplus, the excess heat can be stored in the water storage tank 22, where it exchanges heat with the water through the third heat exchange coil 29, thus storing energy. When there is an energy shortage, the water storage tank 22 releases the stored energy to supplement the system's heat demand, achieving the function of peak shaving and heat absorption.

[0056] Therefore, the present invention provides a regional energy supply system for peak shaving of renewable energy power generation using the above-mentioned structure, which efficiently integrates multiple renewable energy sources, achieves stable and flexible energy supply, promotes peak shaving and absorption of renewable energy, reduces power curtailment, and has good economic and environmental benefits.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A regional energy supply system for peak shaving of renewable energy power generation, characterized in that: It includes an energy supply system, which is configured as a multi-source heat pump unit. The multi-source heat pump unit is connected to a load system, a supplementary energy system, and an energy exchange system. The multi-source heat pump unit includes a condenser, a water storage tank, a compressor, and a heat pump controller. The refrigerant inlet of the condenser is connected to the water storage tank and the load system, respectively, and the refrigerant outlet of the condenser is connected to the compressor, the load system, and the water storage tank, respectively.

2. A regional energy supply system for peak shaving of renewable energy power generation according to claim 1, characterized in that: The load system includes a heat exchanger, a temperature sensor, a household load, and a centralized load. The heat exchanger is internally equipped with a first heat exchange coil and a second heat exchange coil. The two ends of the first heat exchange coil are connected to the refrigerant inlet and refrigerant outlet of the condenser, respectively. The two ends of the second heat exchange coil are connected to the heat exchange inlet and heat exchange outlet of the heat exchanger, respectively.

3. A regional energy supply system for peak shaving of renewable energy power generation according to claim 2, characterized in that: The heat exchange inlet of the condenser is connected to the outlet of the energy replenishment system and the energy exchange system through the first circulation pump group. The energy exchange system includes a soil energy storage component and a water source energy storage component.

4. A regional energy supply system for peak shaving of renewable energy power generation according to claim 3, characterized in that: The heat exchange outlet of the condenser is connected to the inlet of the energy replenishment system and the energy exchange system via a pipeline.

5. A regional energy supply system for peak shaving of renewable energy power generation according to claim 4, characterized in that: The refrigerant inlet of the condenser is connected to the outlet of the first heat exchange coil through a first electric three-way valve. An expansion valve is provided between the heat exchanger and the first electric three-way valve. The refrigerant inlet of the condenser is connected to the heat exchange outlet of the water storage tank through the third passage of the first electric three-way valve. A temperature sensor is provided between the first electric three-way valve and the heat exchange outlet of the water storage tank.

6. A regional energy supply system for peak shaving of renewable energy power generation according to claim 5, characterized in that: The refrigerant outlet of the condenser is connected to the compressor, heat exchanger, and water tank via a four-way reversing valve. The middle copper pipe end of the four-way reversing valve is connected to the inlet of the compressor, the main pipe inlet end of the four-way reversing valve is connected to the outlet of the compressor, and the single-pass copper pipe end of the four-way reversing valve is connected to the refrigerant inlet of the heat exchanger. A second electric three-way valve is provided between the heat exchanger and the single-pass copper pipe end of the four-way reversing valve, and the third passage of the second electric three-way valve is connected to the heat exchange inlet of the water tank.

7. A regional energy supply system for peak shaving of renewable energy power generation according to claim 6, characterized in that: The water storage tank is equipped with a third heat exchange coil inside, and the two ends of the third heat exchange coil are connected to the heat exchange outlet and heat exchange inlet of the water storage tank, respectively; the water storage tank is equipped with a liquid inlet, a liquid outlet and a liquid replenishment port.

8. A regional energy supply system for peak shaving of renewable energy power generation according to claim 7, characterized in that: The inlet of the water storage tank is connected to the outlet of the second heat exchange coil, the outlet of the water storage tank is connected to the inlet of the second heat exchange coil, and the replenishment port of the water storage tank is connected to an external water source through a shut-off valve.

9. A regional energy supply system for peak shaving of renewable energy power generation according to claim 8, characterized in that: The inlet pipe of the energy replenishment system is connected to the outlet pipe of the energy exchange system. The energy replenishment system includes a solar collector and a heat pump unit. A third circulation pump unit is installed on the inlet pipes of the solar collector and the heat pump unit.

10. A regional energy supply system for peak shaving of renewable energy power generation according to claim 9, characterized in that: The power supply system, the load system, the energy replenishment system, and the energy exchange system are all connected to the wind power generation system.

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